Flicking The Old Bean 

Exercising the “wit center” of one’s brain, through the use of spoken or written words, where the stated goal is to play with language, rather than to effectively communicate a specific idea itself.

Sometimes referred to as "Vocabulary Masturbation."

Chris and Jesse do a lot of flicking the old bean every Wednesday while drinking beer.

Flicking The Old Bean by jRiddle December 21, 2019